Cybersecurity, learned like a practitioner.
24 learning paths · 398 modules live · every lesson written by someone who has shipped the control or run the engagement. Free to start.
System Security · modules
Hardening and operating systems defensively. Linux, Windows, logging, containers, privesc.
Module 5 · Privilege Escalation Defence
Root escalation — getting from “regular user” to “root” or SYSTEM — is how most breaches turn catastrophic. A foothold becomes domain compromise via privilege escalation. This module covers the technique classes, the defences, and what a practitioner should be able to recognise on both the offensive and defensive sides. The privesc landscape Privilege escalation […]
Module 4 · Container Security Deep Dive
Containers are everywhere in 2026. Docker, Kubernetes, serverless platforms that are containers underneath. This module covers the security concerns specific to the container layer — separate from the Kubernetes module (Cloud Security M4) which focused on orchestration. Here: image supply chain, runtime isolation, secrets, and container escape. What a container is (and isn’t) A container […]
Module 3 · System Auditing and Logging
Detection requires visibility. Visibility requires logs. If your systems fall silent, you cannot investigate, cannot alert, cannot prove compliance. This module is about what to log, where to send it, and how to get real signal out of raw events. The logging stack Generation — the system produces events (auth, syscalls, application logs) Collection — […]
Module 2 · Windows Security Fundamentals
Windows hardening looks different from Linux. Different tools, different attacker tradecraft, different audit surface. This module covers the baseline every production Windows server and Windows 10/11 workstation should have — without drowning you in 500 pages of MS docs. The hardening stack Authentication — MFA, account policies, Credential Guard Network — firewall, SMB, RDP Endpoint […]
Module 1 · Linux Hardening Fundamentals
You get root on a fresh Linux server. Now what? Default installs — whether Ubuntu, RHEL, Amazon Linux — are not hardened out of the box. This module is your opinionated checklist: the baseline controls every production Linux server should have before it sees traffic. The hardening stack Network — firewall, SSH, services Users & […]
Practitioners who've
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Every module is written by someone who has built the defence or run the engagement. No repackaged tutorials, no generic theory.
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Practitioner-written.
Each lesson is authored by someone who has shipped the control or run the engagement in production.
Quiz after every module.
20+ questions with explanations. 70%+ to mark complete. Unlimited retries.
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